- substr: documentation ( source)
- strpos: documentation ( source)
<?php
$string= 'Het is vandaag vrij zonnig in Los Angeles { "ScriptUrl":"http://s7.addthis.com/js/300/addthis_widget.js#pubid=weeronline", "addthis_config": { "pubid":"weeronline", "ui_language":"nl", "data_ga_property":"UA-3047268-1", "data_track_clickback":"true", "data_ga_social":"true" } }';
echo substr($string, 0, strpos($string, "{"));